PM0056 datasheet(98/156 Pages) STMICROELECTRONICS

tên linh kiện	PM0056

Giải thích chi tiết về linh kiện	This programming manual provides information

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The Cortex-M3 instruction set

PM0056

98/156

DocID15491 Rev 5

3.9.1

BKPT

Breakpoint.

Syntax

BKPT #imm

where:

•

‘imm’ is an expression evaluating to an integer in the range 0-255 (8-bit value).

Operation

The BKPT instruction causes the processor to enter Debug state. Debug tools can use this

to investigate system state when the instruction at a particular address is reached.

imm is ignored by the processor. If required, a debugger can use it to store additional

information about the breakpoint.

The BKPT instruction can be placed inside an IT block, but it executes unconditionally,

unaffected by the condition specified by the IT instruction.

Condition flags

This instruction does not change the flags.

Examples

BKPT 0xAB

; Breakpoint with immediate value set to 0xAB (debugger can

; extract the immediate value by locating it using the PC)

3.9.2

CPS

Change Processor State.

Syntax

CPSeffect iflags

NOP

No Operation

NOP on page 102

SEV

Send Event

SEV on page 102

SVC

Supervisor Call

SVC on page 103

WFE

Wait For Event

WFE on page 103

WFI

Wait For Interrupt

WFI on page 104

Table 32. Miscellaneous instructions (continued)

Mnemonic

Brief description

See

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